Structure diagram and nETR for single nanorods with different cross sections. (a) Schematic picture on an xy plane. (b) Cross sections of the different nanorods on a yz plane. (c) The nETR for square nanorod with a = 40 nm (black), cylinder nanorod with r = 20 nm (red), and hexagon nanorod with w = 25 nm (green). The distance between both dipoles and the ends of the nanorods is d = 20 nm, and the longitudinal length of the nanorods is L = 250 nm.
Yu et al. Nanoscale Research Letters 2013 8:209 doi:10.1186/1556-276X-8-209